HPLSD Amplifier
A difficult choice that of the amplifier …
The amplifier is a very important component in a system. It must provide the same performance as its system mates in terms of musical performance, but has an additional constraint: it must provide a constant current power load. as well as its neighbors in terms of shelf performance, musicality, but with an additional constraint: the supply current to the load result. In addition to this major constraint, it must take responsibility for feeding a diffuser, with its filters and other transducers.
Now this complex load tends to return power to the amplifier whose sad consequence of distortions in inter-reaction for amplifiers called “curly”. These problems appear mostly in the low end, close to the speaker and the resonant frequencies of the speaker, but also to the filter cutoff frequency in many cases. It is the cause of what has become “the speaker-amplifier couple” who beomes on the stage of myth. Similar many people are persuaded to equip with spikes, but a thousand miles they don’t imagine they are actually working on the amplifier …
In this quest for the perfect amplifier is obviously also the question of musicality, timbre … The heat of the tube at the expense of a shortened upper spectrum and a fairly high distortion but without the disadvantages of the closed loop system, or speed transistors for a high well spectrum, low distortion, but cold sound ?
At Helixir our engineers could leave things as they are, and have taken the challenge head on. Again, they did not hesitate to start from a blank sheet to create innovation in structures and design. The result in the spectacular HPLSD500 reference. More than an amplifier, it is a pilot speaker specifically designed for complex workloads that represent the transducers. His surprising timbre, warm as a tube amplifier, and its exceptional speed provide a wonderful medium and a high spectrum more refined and precise.
Through the owner “Extrem Bass Control System”, with an intelligent loop device, the HPLSD500 reaches full control on the movement of the loudspeaker diaphragm, this ensures an accurate, energetic and full of details sound. Through it’s.real-time working in analogue environment, it is able to have full control over the widest possible range of speakers, from the traditional “bass reflex” to those in sealed box, to the more difficult electrostatic with impedances close to 1 ohm.
The rest of the spectrum is not less careful with its colossal gain and power stage blithely passing the bar megahertz. The HPLSD500 is perfectly capable of reproducing cymbals, even at full power, with an ease and clarity remarkable. Its distortion rate never seen before, allows it to reproduce any type of music with exceptional transparency.
Its construction in strict dual mono, with two independent and isolated power supplies that avoid returns to ground through the interconnect cables, and as a result, significantly improves the depth and soundstage in general.
Its digital processor control, continuously monitors the status of the blocks amps, and can act in less than 100 nanoseconds. It also ensures the thermal regulation of the power stage, operating at 100 ° C at the substrates.
Through the owner “Extrem Bass Control System“, with an intelligent loop device, the HPLSD500 reaches full control on the movement of the loudspeaker diaphragm, this ensures an accurate, energetic and full of details sound. Through it’s.real-time working in analogue environment, it is able to have full control over the widest possible range of speakers.
Reserve power and dimensioning of the power stage allows the HPLSD to drive close Ohm loads of such electrostatic speakers that reach these limits beyond 10KHz. Similarly, when to change the position of the membrane of the speaker in the opposite direction this reserve in current draw is helpful and provides an extremely rapid action.
The open loop gain of the amplifier stage is 147dB, ensuring an almost immeasurable distortion. The distortion spectrum has a spectral distribution of the form K / f guaranteeing a warm sound, very quick and defined both. Heat typical “tube” and the speed of the transistor combined togheter to provide a unique listening pleasure.
The thermal control system is assumed by a processor ensuring operation of the transistors of the output stage at 100 ° C at the substrates. This thermo-regulation ensures no thermal distortion and ensuring effective cooling during extended energy demand.
A power supply type “shunt” in pure Class A, a reference ultra low noise voltage, a gain of 120dB control loop, a large quantity of capacitors, an optimized design with small islands masses, give our equivalent analogue systems a lead battery with an energy margin of a factor of 10.
Printed maps are subject to all care of Helixir ™. In addition to using a copper with a purity of 99.99%, we use a new method to deposit electroliquement Gold, without it being deposited in pyramids. The spread of the signal on the card can be in optimal conditions.
Cryogenic processing makes a perfect crystallization of materials allowing to extract the essence, either in conductance or in terms of wave propagation purity. Many components as well our circuit undergo this treatment.AUTRES PRODUITS
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